getting mantissa size of float

[Skaperen]

Perhaps sys.float_info.mant_dig is the required information? It gives 53 on my system.

that's what i'm looking for. i was searching "mantissa" but that word was not used so it was not found. a slow read about the float type would have gotten the reference but, as usual, i am in a hurry and trying to find things the most direct way.